Tire-puncture detector.



J. W. ANDERSON.

TIRE PUNGTURE DETECTOR.

APPLICATION FILED AUG. 20, 1913.

1, 1 1 1,985. Patented 881015.29, 1914.

Hi 111i M all WITNESS ES: INVENTOR g JameaWfllzakman 7% ATTORNEY THENofims PETERS CO. PHOTO-LITHO., WASHINGTON. D. C.

Janus w. ANDERSON, or sAnrmN'cIsco, cnmronmn.

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Specification of Letters Patent.

Application filed August 20, 1913. Serial No. 785,815.

To all whom it may concern:

Be it known that I, JAMES a citizen of the United States, residing inthe city and county of San Francisco and State of California, haveinvented new and useful Improvements in Tire-Puncture Detectors, ofwhich the following is a specification.

This invention relates to a puncture detector for automobile and likepneumatic tires.

The object of the invention is to provide a simple, cheap, practical andsensitive means for detecting small, but nevertheless troublesome leaksin pneumatic tires, which will occupy but very little room and whichwill cover considerable surface of the tire, and at the same time willindicate the immediate localitywhere the leak is when the device ismoved along the tire and over the leak.

The invention consists of the parts, and the construction andcombination of parts as hereinafter more fully described and claimed,having reference to the accompanying drawings, in which- Figure 1 is afront elevation of the device. Fig. 2 is a section on line X-X, Fig. 1.Fig. 3 is a rear elevation of the device.

A is a frame of suitable size, shape and material, preferably curved tofit the contour of the tire. Its dimensions are such as preferably toextend over the treadportion of the tire and when pressed down thereonto maintain a substantially tight joint therewith. Preferably the frameis built up from sections of heavy sole leather or fiber board, for thepurpose of lightness and strength. The open portion 0 the underside ofthe frame is covered with wire netting 2 and the open space in the frameis covered at the top by a sheet of celluloid 3,

W. ANDERSON,

or other transparent window material; the space between the window 3 andthe reticulated bottom 2 provides a chamber 4, Fig. 2,.

or a series of chambers 4:, Fig. 4, to contain the sensitiveleak-detecting medium 5. In Fig. 1 this leak-detecting medium 5comprises. one or more series of tissue paper strips secured at one endto the frame, as shown at 6. Preferably there are two opposing sets ofpaper strips 5 extending from opposite sides of the frame toward thecenter; the free end of the strips being at the center so that when ajetof air is directed from below through the screen 2 it will act on thestrips to lift them successively or in unison; the arrangement andaction being Patented Sept. 29, 1914.

somewhat akin to the arrangement and action of the keys of a pianokeyboard.

Having thus described my invention what I claim and desire to secure byLetters Patent is-- 1. A puncture detector for pneumatic tires.consisting of a frame fitting the periphery of the tire and said framehaving a bottom pervious to air, and a transparent top, said top andpervious bottom inclosing a chamber, and a series of flexible stripshingedly mounted in said chamber, and operable by a current of airpassing through the pervious bottom.

2. In a'puncture detector the combination of a frame havlng areticulated bottom and a flexible strip hingedly supported at one endand restingon said bottom.

In testimony whereof I have hereunto set my hand in the presence oftwo'subscribing witnesses.

JAMES W. ANDERSON. Witnesses:

JOHN II. HERRING, W. W. HEALEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of tatents,

-Washington, D. 0.

